Home / 861,499.72-1,291,450.85-381,471.85

Finding the Fourth Proportional to 861,499.72, 1,291,450.85 and 381,471.85

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Solution

The fourth proportional to 861,499.72, 1,291,450.85 and 381,471.85 is: 571,854.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,499.72 : 1,291,450.85 = 381,471.85 : x
  2. Step 2: Convert to fraction form
    861,499.72/1,291,450.85 = 381,471.85/x
  3. Step 3: Cross multiply
    861,499.72x = 1,291,450.85 × 381,471.85
  4. Step 4: Simplify right side
    861,499.72x = 492,652,136,568.96
  5. Step 5: Solve for x
    x = 492,652,136,568.96/861,499.72
  6. Step 6: Final answer
    x = 571,854.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.